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chaley · 03-06-2021, 06:02 PM

Yes, with a GPM template. The following example shows you how to do the test. Up to you to figure out what you want to do in each case.

Code:

program: 
	x = raw_field('#myint');
	if x == 'None' then
		'Not Set'
	else
		strcat('Is Set to ', x)
	fi

In the latest calibre release, raw_field() takes an optional second parameter specifying what to return if the field isn't defined. Example:

Code:

	x = raw_field('#myint', -999);

Regarding searching, you can distinguish between the two by looking for 'true' or 'false' as in

Code:

#myint:true

03-06-2021, 06:02 PM	#2
chaley Grand Sorcerer Posts: 12,383 Karma: 8012652 Join Date: Jan 2010 Location: Notts, England Device: Kobo Libra 2	Yes, with a GPM template. The following example shows you how to do the test. Up to you to figure out what you want to do in each case. Code: program: x = raw_field('#myint'); if x == 'None' then 'Not Set' else strcat('Is Set to ', x) fi In the latest calibre release, raw_field() takes an optional second parameter specifying what to return if the field isn't defined. Example: Code: x = raw_field('#myint', -999); Regarding searching, you can distinguish between the two by looking for 'true' or 'false' as in Code: #myint:true Last edited by chaley; 03-06-2021 at 06:04 PM.